Maintenance expense of the interstate system shall be from state highway funds. However, highway funds of counties, townships, and municipalities may be used in the maintenance of local service roads, overpasses, and underpasses constructed in connection with the interstate system, unless federal funds are made available for this purpose.
S.D. Codified Laws § 31-7-11
Maintenance expenses--Sources of payment
Source: SL 1955, ch 104, § 5; SDC Supp 1960, § 28.0235; SL 1963, ch 163; SL 2010, ch 145, § 58.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.